Journal of the Optical Society of Korea

Optical Society of Korea (한국광학회)
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A Novel Technique to Minimize Gain-Transient Time of WDM signals in EDFA

  • Shin, Seo-Yong (Department of Communications Engineering, Myongji University) ;
  • Kim, Dae-Hoon (Department of Communications Engineering, Myongji University) ;
  • Kim, Sung-Chul (Department of Communications Engineering, Myongji University) ;
  • Lee, Sang-Hun (Core Network Group R&D Center, Mercury Co.) ;
  • Song, Sung-Ho (Division of Information Engineering & Telecommunications, Hallym University)
  • Received : 2006.12.04
  • Published : 2006.12.25
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Abstract

We propose a new technique to minimize gain-transient time of wavelength-division-multiplexing (WDM) signals in erbium-doped fiber amplifiers (EDFA) in channel add/drop networks. We have dramatically reduced the gain-transient time to less than $3{\mu}sec$ by applying, for the first time to our knowledge, a disturbance observer with a proportional/integral/differential (PID) controller to the control of EDFA gain. The $3{\mu}sec$ gain-transient time is the fastest one ever reported and it is approximately less than 1.5% of $200{\mu}sec$ gain-transient time of commercially available EDFAs for WDM networks. We have demonstrated the superiority of the new technique by performing the simulation with a numerical modeling software package such as the $Optsim^{TM}$.

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References

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Cited by

  1. A Singular Perturbation-Like Approach to EDFA Gain Control Based on Observer Techniques vol.10, pp.4, 2015, https://doi.org/10.5370/JEET.2015.10.4.1864